Sydney, Australia (CNN) — For parents and campaigners who’ve long argued that incessant scrolling is damaging young minds, the start of Australia’s world-first social media ban for under-16s on Wednesday is just the beginning.

Wayne Holdsworth, the father of Mac, who took his life at 17 after being targeted by a sexual extortion scam on social media, joined other parents who’d lost children to suicide at a select gathering at the prime minister’s official residence in Sydney.

“It’s really sad. I shouldn’t be here because he should have been protected,” Holdsworth told CNN at the event to mark the law, which came into effect hours earlier. “I should have known more. He should have known more.”

For Australia’s Labor government, the ban is a political win that’s gaining international a

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